noun
cool breeze; cool air; refreshing coolness
Refers to a pleasant coolness, often from a breeze or shaded area. Commonly used in the phrase 涼を取る (to cool off).
See also: 涼を取る
木陰で涼を取る。
Cool off in the shade of a tree.
夕方になると、川から涼が流れてくる。
In the evening, a cool breeze comes from the river.
涼しい is the common i-adjective meaning 'cool' (weather/temperature), while 涼 is a noun referring to the coolness itself, often used in set phrases.
The kanji 涼 originally relates to coolness and water. The reading りょう is the on'yomi. The word is used as a noun in modern Japanese, often in literary or set expressions.